Is it possible to use mass-reared or field-collected diapaused codling moth larvae, Cydia pomonella (Lepidoptera: Tortricidae), to predict spring biofix?
Abstract
Codling moths, Cydia pomonella (L.), from a mass-reared colony induced into diapause and from locally collected overwintering populations were placed in the field inside mesh cages in the fall of 1997 to determine whether they would synchronize their spring emergence with the wild population and thus could be used as a tool to set biofix. Our results show that the laboratory-reared moths emerged at approximately the same time regardless of the location where they spent the winter. Locally collected (and caged) wild material always emerged later than the remaining wild population and thus was no better at predicting biofix than were laboratory-reared insects.
Key words: Cydia pomonella; diapause; biofix; emergence
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